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Giant cell tumor

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https://www.readbyqxmd.com/read/27910945/thyroid-transcription-factor-1-distinguishes-subependymal-giant-cell-astrocytoma-from-its-mimics-and-supports-its-cell-origin-from-the-progenitor-cells-in-the-medial-ganglionic-eminence
#1
Jen-Fan Hang, Chih-Yi Hsu, Shih-Chieh Lin, Chih-Chun Wu, Han-Jui Lee, Donald Ming-Tak Ho
Subependymal giant cell astrocytoma is a benign brain tumor mostly associated with tuberous sclerosis complex. However, it may be misinterpreted as other high-grade brain tumors due to the presence of large tumor cells with conspicuous pleomorphism and occasional atypical features, such as tumor necrosis and endothelial proliferation. In this study, we first investigated thyroid transcription factor-1 (TTF-1) expression in a large series of subependymal giant cell astrocytomas and other histologic and locational mimics to validate the diagnostic utility of this marker...
December 2, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27910166/anchored-multiplex-pcr-for-targeted-next-generation-sequencing-reveals-recurrent-and-novel-usp6-fusions-and-upregulation-of-usp6-expression-in-aneurysmal-bone-cyst
#2
Natalya V Guseva, Omar Jaber, Munir R Tanas, Aaron A Stence, Ramakrishna Sompallae, Jenna Schade, Allison N Fillman, Benjamin J Miller, Aaron D Bossler, Deqin Ma
Primary aneurysmal bone cyst (ABC) is a neoplastic process due to recurrent translocations involving the USP6 gene. By fluorescence in situ hybridization, up to 69% of primary ABCs harbored USP6 translocations; no USP6 translocation was found in secondary ABC or giant cell tumor of bone (GCT). GCT can recur locally, metastasize to the lungs in some cases, and rarely undergo malignant transformation. Differentiating primary ABC from its mimics is important for treatment and prognosis. We evaluated USP6 fusion and expression in 13 cases of primary and 1 case of secondary ABC, and 9 cases of GCT using nucleic acid extracted from formalin-fixed, paraffin-embedded tissue and a next generation sequencing (NGS)-based assay...
November 7, 2016: Genes, Chromosomes & Cancer
https://www.readbyqxmd.com/read/27907820/preauricular-pilomatricoma-an-uncommon-entity-in-a-dental-pediatric-patient
#3
Poyzan Bozkurt, Mehmet Eray Kolsuz, Ömer Günhan, Erdal Erdem, Kaan Orhan
INTRODUCTION: Pilomatricomas are benign follicular skin appendage tumors, commonly occurring in children and young adults. Most patients admit to dermatologists to seek treatment and are well known by them; however, dental professionals, especially pediatric dentists are not familiar with these tumors. PRESENTATION OF CASE: This report presents a 16-year-old female with preauricular pilomatricoma, located beneath the overlying skin of the temporomandibular region...
November 15, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27907819/giant-primary-malignant-mesothelioma-of-the-liver-a-case-report
#4
Ruba Haji Ali, Mohamad Khalife, Ghina El Nounou, Ruba Zuhri Yafi, Hussein Nassar, Zeinab Aidibe, Randa Raad, Rania Abou Eid, Walid Faraj
INTRODUCTION: Malignant mesothelioma is a rare neoplasm of mesothelial cells arising most frequently in the pleura or peritoneum and less frequently in the liver. CASE PRESENTATION: We present a case of primary hepatic mesothelioma of 41year old woman. She had no history of asbestos exposure or cancer. Abdominal computed tomography (CT) showed 21cm intrahepatic mass in the right lobe with many cystic lesions and few small calcifications. Pathology showed a biphasic cellular pattern...
November 11, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27904227/synostosis-of-proximal-phalangeal-bases-for-loss-of-distal-metacarpal
#5
Pankaj Jindal
A finger rendered unstable due to loss of metacarpal head can be stabilized by creating a synostosis at the base of the proximal phalanx of the affected finger with the adjacent normal finger. A cortico cancellous graft bridges the two adjacent proximal phalanges at their bases which are temporarily stabilized with an external fixator. The procedure can be done for, recurrence of giant cell tumor of metacarpal and for traumatic metacarpal loss. The procedure and long term follow up of one patient is presented who had giant cell tumor...
November 2016: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/27902976/centrosome-clustering-in-the-development-of-bovine-binucleate-trophoblast-giant-cells
#6
Karl Klisch, Elisabeth M Schraner, Alois Boos
Binucleate trophoblast giant cells (BNC) are the characteristic feature of the ruminant placenta. During their development, BNC pass through 2 acytokinetic mitoses and become binucleate with 2 tetraploid nuclei. In this study, we investigate the number and location of centrosomes in bovine BNC. Centrosomes typically consist of 2 centrioles surrounded by electron-dense pericentriolar material. Duplication of centrosomes is tightly linked to the cell cycle, which ensures that the number of centrosomes remains constant in proliferating diploid cells...
December 1, 2016: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/27900098/clinical-effects-of-three-surgical-approaches-for-a-giant-cell-tumor-of-the-distal-radius-and-ulna
#7
Jing Zhang, Yi Li, Dongqi Li, Junfeng Xia, Su Li, Shunling Yu, Yedan Liao, Xiaojuan Li, Huilin Li, Zuozhang Yang
The aim of the present study was to assess the curative effects of three surgical approaches for a giant cell tumor (GCT) of the distal radius and ulna. A total of 27 patients with GCT on distal radius and ulnas (7 and 20, respectively), confirmed by biopsy, were treated with individualized treatment regimens, according to the Campanacci's grade system: i) Curettage plus inactivated tumor bed and allogeneic bone graft/bone cement augmentation for Campanacci's grade I GCT of the distal radius and ulna (Group A); ii) simple en bloc resection for Campanacci's grade II and III GCT of the distal ulna (Group B); iii) en bloc resection and reconstruction with non-vascularized fibular autograft/allogeneic bone graft for Campanacci's II and III GCT of the distal radius (Group C)...
November 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/27899694/non-small-cell-carcinoma-of-the-lung-with-osteoclast-like-giant-cells
#8
Hans Helmut Dahm
Carcinomas of the lung with benign osteoclast-like giant cells are rare. A literature search showed only 8 previously reported examples. These tumors resemble a giant cell tumor of bone. Many of these tumors, which occur in most epithelium-containing organs, are composed of an undifferentiated, sarcomatoid component that contains benign osteoclast-like giant cells and a conventional carcinoma. In some tumors the epithelial origin may be revealed by immunohistochemistry only; others lack any evidence of an epithelial component...
November 29, 2016: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27888510/tenosynovial-giant-cell-tumors-of-the-temporomandibular-joint-and-lateral-skull-base-review-of-11-cases
#9
Matthew L Carlson, L Mariel Osetinsky, Eran E Alon, Carrie Y Inwards, John I Lane, Eric J Moore
OBJECTIVES: To elucidate the clinical behavior, treatment, and outcomes of tenosynovial giant cell tumors (TGCT) involving the temporomandibular joint (TMJ) and adjacent temporal bone. STUDY DESIGN: Retrospective case series with histopathologic review. METHODS: A retrospective chart review was performed identifying and collecting data from all cases of TGCT involving the TMJ and adjacent temporal bone that were treated at the authors' center between January 1960 and December 2015...
November 26, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27885101/giant-cell-tumor-of-talus-t-construct-method-of-bone-grafting
#10
Abhijeet B Kadam, Anoop C Dhamangaonkar
: Giant cell tumor (GCT) or osteoclastoma is a benign, locally aggressive tumor with a tendency to recur. Giant cell tumors typically occur in the epiphysis of long bones, including the distal femur and proximal tibia. They are uncommonly found in the small bones of the foot or ankle, and involvement of talus is rare. The authors present a case of GCT of the talar body in a 21-year-old man, which was diagnosed radiologically by the presence of a well-defined osteolytic lesion involving more than half of the talar body with thinning of the cortices...
November 23, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27883876/comprehensive-genomic-profiling-of-central-giant-cell-lesions-identifies-clinically-relevant-genomic-alterations
#11
Brett Bezak, Heidi Lehrke, Julia Elvin, Laurie Gay, David Schembri-Wismayer, Christopher Viozzi
PURPOSE: Comprehensive genomic profiling (CGP) can simultaneously detect clinically relevant genomic alterations (CRGAs) in hundreds of cancer-related genes and direct treatment toward patient-specific therapy options for many tumors. This pilot study aimed to use CGP to describe CRGAs present in central giant cell lesions (CGCLs) to characterize any possible underlying genomic drivers of CGCLs. MATERIALS AND METHODS: With institutional review board approval, electronic medical records were searched for patients with histologically confirmed CGCLs who underwent biopsy at Mayo Clinic from 2000 through 2014...
November 1, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27878339/multifocal-tenosynovial-giant-cell-tumors-in-a-child-with-noonan-syndrome
#12
Arthur B Meyers, Agboola O Awomolo, Sara Szabo
Noonan syndrome is a genetic disorder with variable expression of distinctive facial features, webbed neck, chest deformity, short stature, cryptorchidism and congenital heart disease. The association of Noonan syndrome and giant cell granulomas of the mandible is widely reported. However, Noonan syndrome may also be associated with single or multifocal tenosynovial giant cell tumors, also referred to as pigmented villonodular synovitis. We report a child with Noonan syndrome, giant cell granulomas of the mandible and synovial and tenosynovial giant cell tumors involving multiple joints and tendon sheaths who was initially misdiagnosed with juvenile idiopathic arthritis...
November 23, 2016: Pediatric Radiology
https://www.readbyqxmd.com/read/27869449/-diffuse-tenosynovial-giant-cell-tumor-of-the-cervical-spine-destroying-vertebra-c6-a%C3%A2-case-report
#13
Zdeněk Kinkor, Tomáš Svoboda, Petr Grossman, David Bludovský, Filip Heidenreich, Andrej Švec, Iveta Mečiarová
Presented is a case of 59-year-old woman with longstanding neck pain who has been promptly operated for spinal cord compression. Imaging studies disclosed ill-defined cervical paravertebral soft tissue mass at the level of vertebra C5/6 abutting left-sided intervertebral joint and destroying neighboring both vertebral arch and processus spinosus. Submitted specimen was interpreted as a possible metastatic skeletal process by clinicians and referring pathologist favored diagnosis of giant cell tumor/osteoclastoma of the bone...
2016: Ceskoslovenská Patologie
https://www.readbyqxmd.com/read/27866665/-giant-cell-reparative-tumor-an-exceptional-differential-diagnosis-for-a-lytic-lesion-of-the-temporal-bone
#14
F Bernard, L Troude, C Bouvier, P-H Roche
BACKGROUND AND IMPORTANCE: Giant cell reparative granuloma is a very rare benign osteolytic lesion. It typically arises in the mandible and rarely involves the skull. CLINICAL PRESENTATION: A 25-year-old male was admitted in August 2002 for a painless left preauricular mass of several months duration. CT scan revealed an osteolytic extradural lesion located in the temporal bone, with extension to infratemporal fossa. We performed a surgical partial resection of the tumour via a frontotemporal approach...
December 2016: Neuro-Chirurgie
https://www.readbyqxmd.com/read/27864816/giant-insulinoma-report-of-a-case-and-review-of-published-reports
#15
Kazumitsu Ueda, Tetsuro Taira, Hiroyuki Hakoda, Shoko Nakata, Shinya Okata, Takeshi Nagai, Shigeo Aoki, Hideyuki Mishima, Akihiko Sako, Tsunehiko Maruyama, Minoru Okumura
BACKGROUND: Larger insulinomas are reportedly more likely to be malignant; however, their biological behavior has not been clearly elucidated. We here report the characteristics and treatment of a giant insulinoma with local invasion and lymph node metastasis. We also review published reports concerning the clinical features of giant insulinomas and comparing their grading with that of pancreatic neuroendocrine tumors. CASE PRESENTATION: A 71-year-old man was referred to our hospital for investigation of persistent hypoglycemia...
December 2016: Surgical Case Reports
https://www.readbyqxmd.com/read/27862328/primary-giant-cell-tumor-of-the-female-breast-a-diagnostic-red-herring-with-therapeutic-implications
#16
Balan Louis Gaspar, Saniya Sharma, Rajinder Singh, Rakesh Kumar Vasishta
Primary giant cell tumor of the female breast is extremely rare. Major diagnostic difficulty is encountered not only by the surgeon but also by the radiologist and pathologist. Pathologically, it is similar to the bone and soft tissue counterparts. However, this is not always true. We describe a patient presenting clinically as cystosarcoma phyllodes and histopathological examination revealed a primary giant cell tumor which was confirmed by immunohistochemistry and electron microscopy. Interestingly, an intimate relationship between the mononuclear component of the tumor cells with eosinophils and mast cells was observed electron microscopically...
November 16, 2016: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/27862217/genome-wide-transcriptome-profiling-of-the-neoplastic-giant-cell-tumor-of-bone-stromal-cells-by-rna-sequencing
#17
Carol Py Lau, Jamie Sl Kwok, Joseph Cc Tsui, Lin Huang, Kevin Y Yang, Stephen Kw Tsui, Shekhar Madhukar Kumta
Giant cell tumor of bone (GCTB) is the most common non-malignant primary bone tumor reported in Hong Kong. Failure of treatment in advanced GCTB with aggressive local recurrence remains a clinical challenge. In order to reveal the molecular mechanism underlying the pathogenesis of this tumor, we aimed to examine the transcriptome profiling of the neoplastic stromal cells of GCTB in this study. RNA-sequencing was performed on three GCTB stromal cell samples and one bone marrow-derived MSC sample and 174 differentially expressed genes (DEGs) were identified between these two cell types...
November 15, 2016: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/27860334/maintenance-therapy-with-everolimus-for-subependymal-giant-cell-astrocytoma-in-patients-with-tuberous-sclerosis-the-eminents-study
#18
Joanna Trelinska, Iwona Dachowska, Dobromila Baranska, Konrad Stawiski, Katarzyna Kotulska, Wojciech Fendler, Sergiusz Jozwiak, Wojciech Mlynarski
OBJECTIVE: One of the therapeutic options for patients with tuberous sclerosis (TCS) and subependymal giant cell astrocytoma (SEGA) is everolimus treatment once daily, every day, to attain trough concentrations of 5-15 ng/ml (standard treatment). The aim of this study was to evaluate the efficacy and safety of a reduced dose of everolimus (three times a week with a daily dose as in standard treatment-maintenance therapy) in a group of patients who were previously treated with standard dose for at least 12 months...
November 15, 2016: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/27853665/systematic-review-and-meta-analysis-of-en-bloc-vertebrectomy-compared-with-intralesional-resection-for-giant-cell-tumors-of-the-mobile-spine
#19
REVIEW
Panya Luksanapruksa, Jacob M Buchowski, Weerasak Singhatanadgige, David B Bumpass
Study Design Systematic review and meta-analysis. Objective To compare the recurrence and perioperative complication rate of en bloc vertebrectomy (EV) and intralesional resection (IR) in the giant cell tumor of the mobile spine (SGCT). Methods We systematically searched publications in the PubMed and Embase databases for reports of SGCTs, excluding the sacrum. Two reviewers independently assessed all publications. A meta-analysis was performed using local recurrence and postoperative complications as the primary outcomes of interest...
December 2016: Global Spine Journal
https://www.readbyqxmd.com/read/27847665/an-unusual-and-complicated-course-of-a-giant-cell-tumor-of-the-capitate-bone
#20
Ingo Schmidt
A 51-year-old female patient presented with a carpal giant cell tumor (GCT) of the right capitate bone. The lesion was initially misdiagnosed as having an osteomyelitis. First, the diagnosis of a benign GCT was confirmed by histological examination. Second, an intralesional curettage and packing of the cavity with cancellous iliac crest bone grafts combined with a fusion of the third carpometacarpal (CMC III) joint were carried out. Third, due to a secondary midcarpal osteoarthritis and a secondary scaphoid nonunion, the CMC III joint fusion plate was removed and the midcarpal joint completely excised...
2016: Case Reports in Orthopedics
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